JavaScript中动态创建的内容在刷新页面MVC时丢失

我建议在修改新内容时使用设置为true的标志。如果用户试图离开/刷新,可以使用onunload/obeforeunload进行警告

var _isDirty = false;
//Set this flag to true when you are making changes
 _isDirty = true;

如果用户真的想刷新,请勾选该方法并与他/她核实

function confirmWinClose() {
 var confirmClose = confirm('Are you sure you want to refresh/leave?');
 return confirmClose;
}

window.onbeforeunload = confirmWinClose();